<header>Don't trust GIDs</header>

Like <a href=squash_uids>Don't trust UIDs</a>, this option
allows you to specify a list of client GIDs to be treated as the
<a href=anongid>untrusted group</a>. You must enter a comma-separated list
of GIDs or GID ranges like <tt>1,10,20-25,100-150</tt>.
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